Music-leaf turner.



S. J. COOK.

MUSIC LEAF TURNER.

APPLICATION FILED SEPT. 17, 1912.

Patnted 0015.14, 1913.

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S. J. 000K.

MUSIC LEAF TURNER.

APPLICATION FILED SEPT. 17, 1912.

Patented Oct. 14, 1913.

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COLUMBIA PLANOGRAPH C0,, WASHINGTON, D. c.

SAMUEL J. cook, or KANSAS CITY, it rssouar.

MUSIC-LEAF 'T UitNER.

Specification 03? Letters Patent.

Patented Oct. 14, 1913.

Application filed September 17, 1912. Serial No. 720,837.

To all whom it may concern.

Be it known that I, SAMUEL J. Cook, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented new and useful Improvements in Music-Leaf Turners, of which the following is a specification.

This invention relates to music leaf turners, and it has for its object to produce a simple and eflicient device of this class which may be readily applied to stationary or portable music stands of any kind.

lVith these and other ends in view which will readily appear as the nature of the invention is better understood, the same consists in the improved construction and novel arrangement and combination of parts which will be herein-after fully described and particularly pointed out in the claim.

In the accompanying drawings has been illustrated a simple and preferred form of the invention, it being, however, understood that no limitation. is necessarily made to the precise structural details therein exhibited, but that. changes, alterations and modifications within the scope of the claim ma be;

resorted to when desired.

In the -drawings,Figure 1 is a .iperspec tive view "of a device constructedin accordance with the lnvention, and showing the same in position to receivea .piece of music. Fig. 2 is a plan view showlng the music sheet inserted in position and folded to one side.

Fig. 3 is asectionaldetail view taken on the line 33 in Fig. 1. Fig. '4 is a plan view showing a portion oft-he underside of th'e'de'vice. Fig. 5 is a sectional detail View taken on the line 55 in Fig. 2. Fig. "6 is a "sectional detail view taken on theline 66 in Fig. 2.

Corresponding parts in the several figures are denoted by like characters ofreference.

The frame Act the improved device,

which may be of any desired dimensions and general construction, is provided with a cleat 1 disposed about centrally between the right and left "hand ends thereof and with a music supporting shelf or ledge 2 which is looated ad'jacent to the lower end of the cleat 1. The frame includes a [pla rality of transverse bars 3. A plurality of:

links 4 which are pivoted upon the frame structure support a cleat 5 which is adapted to lie contiguous to the cleat 1. This cleat 5 is adapted to be moved laterally by a swinging movement of the links 4, and

when said cleat 5 is moved away from the cleat l the edge or fold of a sheet of music may be inserted between the cleats 1 and 5, as indicated in Fig. 1, after which by moving the cleat 5 in the direction of the cleat 1, such edge or fold will be securely clamped between the said cleats, it being understood that when a sheet or fold is thus olaiinped the links 4 will occupy a position approximately at right angles to the cleat 5, thus practically looking the latter in position and preventing accidental dislodgment of the sheet. it is, furthermore, to be understood that the word sheet as herein used is to be construed as applying equally to any book, the thickness of which will not preclude its being clamped and held securely between the cleats 1 and 5.

The frame structure A is provided adjacent to its right hand side with a spring clip or clamp 6 beneath which one or more sheets including, if necessary, a book cover,

may be inserted and held securely while other sheets are arranged for being turned by the device, as will be presently :described.

The frame structure A is provided heneath the ledge or shelf 2 with a slot 7 adacent to one end of which, directly beneath the opposed edges of the 'clea-t's l and 5,

brackets 8 are secured, said brackets aftording bearings for a shaft .9 upon which a plurality of arms 10, 1O, 10 are pivotally mounted. These arms, which are of gradu any increasing length, are provided adjacent to their free ends withupwardly extending terminals 11 11', 11 which are likewise of gradually increasing length and which when the arms are juxtaposed are adapted to lie side by side, as shown, each of said terminals being provided with a spring catch or clamp 12 adapted to engage and to ho'ld'the free edge of a music sheet.

' It is obvious that any suitable and appro pia'te number of arms may be used, thus adapting the device to turn, successively, as inlany "leaves 'or sheets that may be desired.

Each of the arms 10, 10, 10" is provided with a crank13, 13, 13 extending radially with reference to the shaft 9 into the slot 7 of the frame A. Suitably connected with the latter are a plurality of springs 14, 14, 14, the free ends of which are connected by flexible connecting members, such as chains 15, with the respective cranks 13, 18, 13", the tension of the springs being exerted to swing the arms 10, 10, 10 toward the left of the axis of the shaft 9.

Supported upon the frame adjacent to the right hand side of the brackets 8 is a casing or casting 16 within which a lever 17 is pivotally supported. The lever 17 is provided at its rear end with an upwardly and forwardly extending arm 18 having a downwardly extending terminal tooth 19. The lever 17 is provided at its forward end with a thumb piece or handle 20, and between said handle and the fulcrum of the lever the latter is provided with a pivoted tooth or dog 21, the rear end of which is actuated in an upward direction by means of a spring 22; a second spring 22 being provided which serves to project the forward end of the lever 17 upwardly. The casing or casting 16 is provided at its front end with an upwardly extending bracket 23 having a slot 24 through which the lever 17 projects, the movement of said lever in an upward direction under the tension of the spring 22 being limited by the extent of said slot. The casing member 16 is provided with a notch or recess 25, the upper wall of which is formed by an arm 26 having an over-- hanging cam face 27. The lever 17 is provided with a notch or recess 28 directly in rear of the pivoted spring actuated dog 21. It will be seen that when the arms 10, 10, 10 are moved from left to right they will pass betwen the spring actuated dog 21 and the cam-shaped member 26 until one of said arms engages the notch 28 of the lever 17, where such arm is also engaged by the spring actuated dog 21 which prevents its being restored to its initial position by the tension of the spring 14, 14 or 14 with which the radial crank of such arm is connected. Each of the leaf turning arms 10, 10, 10 is recessed at its upper edge to form an inverted V-shaped tooth 30 which is adapted to be engaged by the terminal tooth 19 of the upwardly and forwardly extending arm 18 of the lever 17 and by the spring actuated dog 21 which is pivotally associated with said lever.

The first or longest of the leaf turning arms, which is designated 10, is provided with a handle 31 and with lugs 32 between which the remaining leaf turning arms may be accommodated. It will be seen that by laying hold of said handle, the several leaf turning arms may be moved from left to right and placed in engagement with the spring retaining dog 21. By depressing the handle 20 of the lever 17, the latter will be rocked against the tension of its actuating spring, thus retracting the dog 21 from engagement with one of the leaf turning arms and permitting the latter to be swung toward the left and under the influence of its actuating spring let, the next leaf turning arm being intercepted by theterminal tooth 19 of the arm 18 of the operating lever which constitutes an escapement whereby only one leaf turning lever may be actuated at one time. When the pressure upon the thumb piece 20 of the lever 17 is released, said lever will be restored to its initial position when the pivoted dog 21 will lie in the path of the remaining leaf turning arms which are thus temporarily retained in position.

It will be readily understood by those skilled in the art to which this invention appertains that by using any desired num ber of leaf turning arms and related parts, any desired number of leaves may be successively turned.

The frame of the device is provided adjacent to its upper end with a bracket 35 having a slide 36 and an adjusting screw 37 constituting a clamping device, whereby the said frame structure may be supported in position for operation.

Having thus described the invention, what is claimed as new, is

In a device of the class described, a frame, a shaft supported on the front side of the frame, a plurality of arms pivoted on the shaft, each having a crank extending radially with respect to the shaft, spring means connected with the cranks for actuating the arms successively in one direction, leaf holding devices associated with the arms, a handle connected with one of the arms which is outermost when the arms are in normal position before being released, and lugs extending rearwardly from the handle carrying arm and accommodating between them the remaining arms to enable said arms to be simultaneously turned against the tension of the springs.

In testimony whereof I affix my signature in presence of two witnesses.

SAMUEL J. COOK.

Witnesses:

ALFRED J. 0001:, JOHN GINDLEsPERGER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G. 

